2421647 has 8 divisors (see below), whose sum is σ = 2544000. Its totient is φ = 2300760.

The previous prime is 2421641. The next prime is 2421649. The reversal of 2421647 is 7461242.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2421647 - 2¹² = 2417551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2421641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4604 + ... + 5102.

It is an arithmetic number, because the mean of its divisors is an integer number (318000).

2^2421647 is an apocalyptic number.

2421647 is a deficient number, since it is larger than the sum of its proper divisors (122353).

2421647 is a wasteful number, since it uses less digits than its factorization.

2421647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733.

The product of its digits is 2688, while the sum is 26.

The square root of 2421647 is about 1556.1641944217. The cubic root of 2421647 is about 134.2879195676.

Adding to 2421647 its reverse (7461242), we get a palindrome (9882889).

The spelling of 2421647 in words is "two million, four hundred twenty-one thousand, six hundred forty-seven".